What's weird about that is that they went and licensed the book but then only used the title. Pretty much nothing from the book made it into the movie.
The whole POTC/MI connection is kind of sad. They were working on an animated MI movie back in the '90s but it was cancelled. Later on a couple of the writers from that project were hired to work on POTC and decided to use concepts from the now defunct film.
As for if we'll ever see more MI, that will again be up to the president of Lucasarts. The only Lucas property Disney is interested in is Star Wars.